EP 4274871 A2 20231115 - CHEMICAL FLUID CONTAINING AN ANTIOXIDANT FOR UNDERGROUND TREATMENT OF OIL AND GAS RESERVOIRS
Title (en)
CHEMICAL FLUID CONTAINING AN ANTIOXIDANT FOR UNDERGROUND TREATMENT OF OIL AND GAS RESERVOIRS
Title (de)
CHEMISCHES FLUIDUM ENTHALTEND EIN ANTIOXIDANS ZUR UNTERIRDISCHEN BEHANDLUNG VON ÖL- UND GASRESERVOIRS
Title (fr)
FLUIDE CHIMIQUE CONTENANT UN ANTIOXYDANT POUR LE TRAITEMENT SOUTERRAIN DE RÉSERVOIRS DE PÉTROLE ET DE GAZ
Publication
Application
Priority
- US 202117146047 A 20210111
- US 2022011975 W 20220111
Abstract (en)
[origin: US2022220362A1] A chemical fluid for underground injection includes an inorganic substance, an antioxidant (e.g. ascorbic acid, gluconic acid, or a salt thereof, or bisulfite, or disulfite), and water. The inorganic substance may be a colloidal particle or a powder. The inorganic substance may be present in the chemical fluid in amounts of 0.001% by mass to 50% by mass based on the total mass of the chemical fluid for underground injection. The antioxidant may be present in the chemical fluid at a ratio of 0.0001 to 2 of the mass of the antioxidant to the mass of the inorganic substance. A surface of the inorganic substance may be coated with a silane compound. The chemical fluid may further include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, or a mixture thereof.
IPC 8 full level
C09K 8/00 (2006.01); C09K 8/03 (2006.01); E21B 43/00 (2006.01); E21B 43/16 (2006.01); E21B 43/20 (2006.01)
CPC (source: EP US)
C09K 8/584 (2013.01 - EP US); C09K 8/588 (2013.01 - EP); E21B 43/16 (2013.01 - EP US); C09K 2208/10 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 2022220362 A1 20220714; CA 3204615 A1 20220714; CN 116685657 A 20230901; EP 4274871 A2 20231115; JP 2024502487 A 20240119; MX 2023008158 A 20231004; WO 2022150762 A2 20220714; WO 2022150762 A3 20220818
DOCDB simple family (application)
US 202117146047 A 20210111; CA 3204615 A 20220111; CN 202280009658 A 20220111; EP 22737291 A 20220111; JP 2023541897 A 20220111; MX 2023008158 A 20220111; US 2022011975 W 20220111